I have my 70+ sites down to about 30 now. Monstrous amounts of loot. As soon as I clear the remaining Perimeter Hangar sites it will be time for a run to market. In the mean time, I always load all the loot into my cargo bay before I go to my safe spot and logoff...
I have yet to see another pilot in this hub system, so I pretty much feel like I am burning POS fuel for no reason, but I am a firm believer in Murphy's Law - as soon as I decide to offline to save fuel, that would certainly be just when it was needed most.
The respawn rate has basically come to a halt, so after the prior posts and theorizing (be sure to read the comments - good discussion there) about respawn rate differences between "hub" systems and "surface" systems, all those assumptions are on hold until I see more evidence to support the assumptions.
Not that I am complaining, I have a lot to work on here.